<template>
  <div class="swiper-container swiper-skuImg">
    <div class="swiper-wrapper">
      <div class="swiper-slide" 
      v-for="skuImg in skuInfo.skuImageList" 
      :key="skuImg.id" 
      @click="handlerImgUrl(skuImg)">
        <img :src="skuImg.imgUrl" :class="{active:skuImg.isDefault==='1'}">
      </div>
    </div>
    <div class="swiper-button-next"></div>
    <div class="swiper-button-prev"></div>
  </div>
</template>

<script>
import Swiper from 'swiper';
import { mapGetters, mapMutations } from 'vuex';
export default {
  name: 'ImageList',
  computed: {
    ...mapGetters('detail', ['skuInfo'])
  },
  watch: {
    skuInfo() {
      this.$nextTick(() => {
        new Swiper('.swiper-skuImg', {
          slidesPerView: 'auto', // 自动生成对应的那些小图片个数
          spaceBetween: 100, // 两个小图片间的间距
          // 如果需要前进后退按钮
          navigation: {
            nextEl: '.swiper-button-next',
            prevEl: '.swiper-button-prev'
          }
        });
      });
    }
  },
  methods: {
    ...mapMutations('detail',['UPDATE_SKUINFO_DEFAULT_IMGURL']),
    handlerImgUrl(skuImg) {
      // 由于要修改Vuex中的state中的skuInfo里面的skuDefaultImg
      // 最好不要在当前组件中修改，那要到mutations中去修改
      // 只需要调用mutations中的方法即可
      this.UPDATE_SKUINFO_DEFAULT_IMGURL(skuImg)
    }
  }
};
</script>

<style lang="less" scoped>
.swiper-container {
  height: 56px;
  width: 412px;
  box-sizing: border-box;
  padding: 0 12px;

  .swiper-slide {
    width: 56px;
    height: 56px;

    img {
      width: 100%;
      height: 100%;
      border: 1px solid #ccc;
      padding: 2px;
      width: 50px;
      height: 50px;
      display: block;

      &.active {
        border: 2px solid #f60;
        padding: 1px;
      }

      &:hover {
        border: 2px solid #f60;
        padding: 1px;
      }
    }
  }

  .swiper-button-next {
    left: auto;
    right: 0;
  }

  .swiper-button-prev {
    left: 0;
    right: auto;
  }

  .swiper-button-next,
  .swiper-button-prev {
    box-sizing: border-box;
    width: 12px;
    height: 56px;
    background: rgb(235, 235, 235);
    border: 1px solid rgb(204, 204, 204);
    top: 0;
    margin-top: 0;
    &::after {
      font-size: 12px;
    }
  }
}
</style>